{"id":"CVE-2022-50852","state":"PUBLISHED","title":"wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: fix use after free in mt7921_acpi_read()\n\nDon't dereference \"sar_root\" after it has been freed.","publishedAt":"2025-12-30T12:15:28.444Z","updatedAt":"2026-05-11T19:26:22.017Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f965333e491e36adb0fa91e389fba8685b704fb6","status":"affected","lessThan":"3ed0b382cb36f6dac9f93b3a5533cfcd699409a5","versionType":"git"},{"version":"f965333e491e36adb0fa91e389fba8685b704fb6","status":"affected","lessThan":"e7de4b4979bd8d313ec837931dde936653ca82ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"]}],"references":["https://git.kernel.org/stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5","https://git.kernel.org/stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea"],"weaknesses":[],"ingestedAt":"2026-10-29T20:05:26.763Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2022/50xxx/CVE-2022-50852.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2022-50852","state":"PUBLISHED","datePublished":"2025-12-30T12:15:28.444Z","dateUpdated":"2026-05-11T19:26:22.017Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2025-12-30T12:06:07.134Z"},"containers":{"cna":{"title":"wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7921: fix use after free in mt7921_acpi_read()\n\nDon't dereference \"sar_root\" after it has been freed."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"f965333e491e36adb0fa91e389fba8685b704fb6","status":"affected","lessThan":"3ed0b382cb36f6dac9f93b3a5533cfcd699409a5","versionType":"git"},{"version":"f965333e491e36adb0fa91e389fba8685b704fb6","status":"affected","lessThan":"e7de4b4979bd8d313ec837931dde936653ca82ea","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.0.3","status":"unaffected","lessThanOrEqual":"6.0.*","versionType":"semver"},{"version":"6.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/mediatek/mt76/mt7921/acpi_sar.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5"},{"url":"https://git.kernel.org/stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T19:26:22.017Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.0.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}